High Temperature 4 Roll PTFE Stretch System

The MDO section has two 16″ face width x 18″ diameter steel rolls with stainless steel overlay having and electric heating to 550° F. A second two roll section accommodates two 16″ wide x 18″ diameter steel rolls with stainless steel overlay. One roll provides sintering capability and is heated to maximum 780° F and one roll provides annealing capability and is heated to maximum 550° F. The modular rewind takes up the material as it exits from the chill roll.

Dual Calender System Inline With Extrusion Process To Ensure Thickness And Density Of PTFE

The dual station Calendering system is used inline with a PTFE extrusion process to 10″ wide to ensure both thickness and density. The Pre-Meter calender has 12″ diameter x 14″ face chrome plated steel rolls finished to 1 RMS. The pre metered material is fed to the Computerized Metering Calender. The 2-Roll Computerized Metering Calender has two (2) 16″ diameter by 14″ face heated rolls to 250°F with internal fluid path and provides automatic final product metering to +/-.0001″ thickness accuracy

All four heated rolls are 24″ face x 18″ diameter steel alloy with a 6 RMS finish. The entry MDO section has two heated rolls to 550º F and the sintering section has a sintering roll to 760ºF and an annealing roll to 550ºF. The MDO machine has a 5 drive AC flux vector drive system with a speed range to 100 FPM with a 10:1 stretch and .1% speed match accuracy. The 18″ diameter aluminum chill roll is driven from the annealing roll.

2 Roll Metering Calendar With Closed Loop Gap Adjustment For Meterig And Densifying PTFE In Line With Existing Manufacturing Process.